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Shaded-relief atlas plate of Union, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · JEFFERSON COUNTY

Union

829 people, 1,660 ft above sea level in Jefferson County.

1,660 ftElevation, city center
829People, 2024 estimate
18 sq miLand area
Sunny 64°
Sunny now Dew point 58° · SW 3 mph · high 64°
City of Union River Interstate 2 miles
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The Union plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Union

NWS forecast and National Blend of Models · updated 6:00 PM EDT
RIGHT NOW Du Bois - Jefferson County Airport (KDUJ) · 5:53 PM
Sunny
64° Sunny Feels like 64° · high of 64° near 6 PM
WindSW 3 mphno gusts
Humidity81%rising to 100% by morning
Pressure30.07 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 58° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Friday, about 9 AMin about 62 hours · 85% chance · rain
LIKELY AMOUNT0.1–0.7 inmost likely 0.3; 1 in 10 over 1.1
LAST RAINSept. 270.14 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Jefferson County
NWS Pittsburgh and the Storm Prediction Center · checked 6:47 PM
SUN & MOON
↑ 7:11 AM7:02 PM ↓
11 h 51 m of daylight, 3 minutes less than yesterday
Waning gibbous, 88% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
24
GOODAir quality index · ozone
Tomorrow: 42, good. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
partly cloudy night
partly cloudy night
mostly clear night
partly cloudy night
fog
partly cloudy day
partly cloudy day
partly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy day
rain
rain
rain
TEMPERATURE °F
64°
51°
72°
59°
73°
63°
CHANCE OF RAIN
85% · 0.18 in Friday afternoon 50%
WIND, MPH
0
0
0
0
0
3
6
6
3
3
4
5
6
7
10
10
8
7
7
8
9
11
12
11
HOW IT FEELS · DEW POINT
Comfortable: dew points 51 to 62°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 66° / 46°
TUE Sept. 29 Partly cloudy Partly cloudy
64° 51°
0% rain — SW 0 A
WED Sept. 30 Partly cloudy; warmer Partly cloudy; warmer
72° 58°
10% rain — SW 4 A
THU Oct. 1 Partly cloudy Partly cloudy
75° 62°
10% rain — SW 8 B
FRI Oct. 2 Showers likely Showers likely
71° 46°
80% rain 0.1–0.7″ NW 9 C
SAT Oct. 3 Partly cloudy Partly cloudy
66° 45°
10% rain — E 6 B
SUN Oct. 4 Partly cloudy Partly cloudy
65° 44°
30% rain — WSW 7 B
MON Oct. 5 Mostly sunny Mostly sunny
60° 36°
0% rain — NW 8 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Union about 5,000 feet above the ground was over the western Atlantic three days ago, and over the Great Lakes a day ago, about 1,210 miles back along its path. It rose from near the ground on the way. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

MILE7
ON THE NETWORK

Around Union on the Forecast Network

Neighboring plates

Pittsburgh PA · 67 MI 67 miles southwest Cleveland OH · 132 MI 132 miles west Baltimore MD · 188 MI 188 miles southeast Washington DC · 195 MI 195 miles southeast
FORECASTCITY
Atlas plate of Union, Pennsylvania. Explore the plate
PENNSYLVANIA · JEFFERSON

Union

829 people, 1,660 ft above sea level in Jefferson County.

1,660 ftElevation
829People
18 sq miLand
Sunny 64°
SunnyDew point 58°
1

Today in Union

NEXT 15 HOURS
Now partly cloudy day 64° 0%
9p partly cloudy night 60° 0%
12a mostly clear night 56° 0%
3a partly cloudy night 53° 0%
6a fog 51° 0%
9a fog 57° 0%
Mostly cloudy
NEXT RAINFriday about 9 AM · 85%
→
Tue0%
Partly cloudy Partly cloudy
51
64
A
Wed10%
Partly cloudy; warmer Partly cloudy; warmer
58
72
A
Thu10%
Partly cloudy Partly cloudy
62
75
B
Fri80%
Showers likely Showers likely
46
71
C
Sat10%
Partly cloudy Partly cloudy
45
66
B
Sun30%
Partly cloudy Partly cloudy
44
65
B
Mon0%
Mostly sunny Mostly sunny
36
60
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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